| 摘要 |
<p>In an air enclosure and a check valve (10) capable of being filled with high pressure air, two first inner films (11a,11b) are installed between two outer films (2a,2b), and two second inner films (12a,12b) are then stacked together between the two first inner film. The two outer films and the two first inner films are adhered together by means of hot sealing to allow the two first inner films to be positioned between the two outer films and an air cylinder (20) to be formed between the two outer films; the two second inner films are adhered to each other by means of hot sealing to form a second air inlet (12d) between the two second inner films. Thereafter, an air filling tool may be used to force high pressure air into the second air inlet and into the air cylinder, causing the air cylinder to fill with air and expand.
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